Possibility of giant enhancement of low-frequency non-resonant Rayleigh scattering by atomic systems within dense plasmas

In this paper, we demonstrate the possibility of electron density-induced giant growth of non-resonant Rayleigh scattering of electromagnetic radiation (in the low-frequency limit) by atomic systems within dense plasmas. Non-relativistic quantum mechanical calculation is performed under electric dip...

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Bibliographic Details
Published in:Physics of plasmas 2014-03, Vol.21 (3)
Main Authors: Basu, Joyee, Ray, Debasis
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
APPROXIMATIONS
ATOMIC IONS
CROSS SECTIONS
Dense plasmas
ELASTIC SCATTERING
ELECTRIC DIPOLES
ELECTROMAGNETIC RADIATION
ELECTRON DENSITY
GROUND STATES
HYDROGEN
Isoelectronic sequence
PHOTONS
PLASMA
Plasma physics
QUANTUM MECHANICS
RAYLEIGH SCATTERING
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Summary:In this paper, we demonstrate the possibility of electron density-induced giant growth of non-resonant Rayleigh scattering of electromagnetic radiation (in the low-frequency limit) by atomic systems within dense plasmas. Non-relativistic quantum mechanical calculation is performed under electric dipole approximation, for elastic scattering of radiation by the ground states 1s of plasma-embedded hydrogen-like atomic ions treated within the framework of the ion-sphere model. The results indicate giant enhancement of the non-resonant (photon frequency ω being much smaller than the lowest resonance frequency ω 1 s − 2 p ) Rayleigh cross-section by an order of magnitude, at (atomic system-specific) high enough plasma electron densities under present consideration. The Z−8-scaling of the non-resonant Rayleigh cross-section in free and isolated H-isoelectronic sequence of ions is shown to be broken in dense plasma environments.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4869249